No open health-based violations on EPA record in the last 10 years.
Serves about 8,575 people (3,500 connections) with surface water bought from Columbus Division of Water.
From EPA's record for OH2501003. PurityMap is independent of Sanitary District #4.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to November 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 7.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorobutanesulfonic acid (PFBS) | 11 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorohexanoic acid (PFHxA) | 22 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorobutanoic acid (PFBA) | 17 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoroheptanoic acid (PFHpA) | 5.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoropentanoic acid (PFPeA) | 17 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-12 | UCMR5 Analytical Results: SANITARY DISTRICT #4 (OH2501003) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Sanitary District #4's phone number on EPA record is 614-525-5850. Its mailing address is FRANKLIN COUNTY SANITARY ENGINEERS, 280 EAST BROAD ST 2ND FLOOR, COLUMBUS, OH 43215.
According to EPA's record, Sanitary District #4 uses surface water bought from Columbus Division of Water.
EPA's record shows 1 health-based violation for Sanitary District #4 in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Sanitary District #4's latest lead and copper round, which ended in December 2025, was 1.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Sanitary District #4. Its phone number on EPA record is 614-525-5850. Its mailing address on EPA record is FRANKLIN COUNTY SANITARY ENGINEERS, 280 EAST BROAD ST 2ND FLOOR, COLUMBUS, OH 43215. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.